But after his organ transplant eight years ago, the kidney has since stopped functioning in October and Lomu will now have to find a new donor. And Lomu revealed to New Zealand Woman's Weekly that he has been undergoing dialysis for 21 hours a week.

Lomu said: "We were hoping to see some improvement but nothing has made any difference, so the next step is to try to find a donor."

The Kiwi legend was diagnosed with the serious kidney disorder nephrotic syndrome in 1995 and underwent his first organ transplant in 2004.